187 lines
4.9 KiB
C
187 lines
4.9 KiB
C
/* mmix.h -- Header file for MMIX opcode table
|
|
Copyright (C) 2001, 2003 Free Software Foundation, Inc.
|
|
Written by Hans-Peter Nilsson (hp@bitrange.com)
|
|
|
|
This file is part of GDB, GAS, and the GNU binutils.
|
|
|
|
GDB, GAS, and the GNU binutils are free software; you can redistribute
|
|
them and/or modify them under the terms of the GNU General Public
|
|
License as published by the Free Software Foundation; either version 2,
|
|
or (at your option) any later version.
|
|
|
|
GDB, GAS, and the GNU binutils are distributed in the hope that they
|
|
will be useful, but WITHOUT ANY WARRANTY; without even the implied
|
|
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
|
|
the GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this file; see the file COPYING. If not, write to the Free
|
|
Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
|
|
|
|
/* We could have just a char*[] table indexed by the register number, but
|
|
that would not allow for synonyms. The table is terminated with an
|
|
entry with a NULL name. */
|
|
struct mmix_spec_reg
|
|
{
|
|
const char *name;
|
|
unsigned int number;
|
|
};
|
|
|
|
/* General indication of the type of instruction. */
|
|
enum mmix_insn_type
|
|
{
|
|
mmix_type_pseudo,
|
|
mmix_type_normal,
|
|
mmix_type_branch,
|
|
mmix_type_condbranch,
|
|
mmix_type_memaccess_octa,
|
|
mmix_type_memaccess_tetra,
|
|
mmix_type_memaccess_wyde,
|
|
mmix_type_memaccess_byte,
|
|
mmix_type_memaccess_block,
|
|
mmix_type_jsr
|
|
};
|
|
|
|
/* Type of operands an instruction takes. Use when parsing assembly code
|
|
and disassembling. */
|
|
enum mmix_operands_type
|
|
{
|
|
mmix_operands_none = 0,
|
|
|
|
/* All operands are registers: "$X,$Y,$Z". */
|
|
mmix_operands_regs,
|
|
|
|
/* "$X,YZ", like SETH. */
|
|
mmix_operands_reg_yz,
|
|
|
|
/* The regular "$X,$Y,$Z|Z".
|
|
The Z is optional; if only "$X,$Y" is given, then "$X,$Y,0" is
|
|
assumed. */
|
|
mmix_operands_regs_z_opt,
|
|
|
|
/* The regular "$X,$Y,$Z|Z". */
|
|
mmix_operands_regs_z,
|
|
|
|
/* "Address"; only JMP. Zero operands allowed unless GNU syntax. */
|
|
mmix_operands_jmp,
|
|
|
|
/* "$X|X,$Y,$Z|Z": PUSHGO; like "3", but X can be expressed as an
|
|
integer. */
|
|
mmix_operands_pushgo,
|
|
|
|
/* Two registers or a register and a byte, like FLOT, possibly with
|
|
rounding: "$X,$Z|Z" or "$X,ROUND_MODE,$Z|Z". */
|
|
mmix_operands_roundregs_z,
|
|
|
|
/* "X,YZ", POP. Unless GNU syntax, zero or one operand is allowed. */
|
|
mmix_operands_pop,
|
|
|
|
/* Two registers, possibly with rounding: "$X,$Z" or
|
|
"$X,ROUND_MODE,$Z". */
|
|
mmix_operands_roundregs,
|
|
|
|
/* "XYZ", like SYNC. */
|
|
mmix_operands_sync,
|
|
|
|
/* "X,$Y,$Z|Z", like SYNCD. */
|
|
mmix_operands_x_regs_z,
|
|
|
|
/* "$X,Y,$Z|Z", like NEG and NEGU. The Y field is optional, default 0. */
|
|
mmix_operands_neg,
|
|
|
|
/* "$X,Address, like GETA or branches. */
|
|
mmix_operands_regaddr,
|
|
|
|
/* "$X|X,Address, like PUSHJ. */
|
|
mmix_operands_pushj,
|
|
|
|
/* "$X,spec_reg"; GET. */
|
|
mmix_operands_get,
|
|
|
|
/* "spec_reg,$Z|Z"; PUT. */
|
|
mmix_operands_put,
|
|
|
|
/* Two registers, "$X,$Y". */
|
|
mmix_operands_set,
|
|
|
|
/* "$X,0"; SAVE. */
|
|
mmix_operands_save,
|
|
|
|
/* "0,$Z"; UNSAVE. */
|
|
mmix_operands_unsave,
|
|
|
|
/* "X,Y,Z"; like SWYM or TRAP. Zero (or 1 if GNU syntax) to three
|
|
operands, interpreted as 0; XYZ; X, YZ and X, Y, Z. */
|
|
mmix_operands_xyz_opt,
|
|
|
|
/* Just "Z", like RESUME. Unless GNU syntax, the operand can be omitted
|
|
and will then be assumed zero. */
|
|
mmix_operands_resume,
|
|
|
|
/* These are specials to handle that pseudo-directives are specified
|
|
like ordinary insns when being mmixal-compatible. They signify the
|
|
specific pseudo-directive rather than the operands type. */
|
|
|
|
/* LOC. */
|
|
mmix_operands_loc,
|
|
|
|
/* PREFIX. */
|
|
mmix_operands_prefix,
|
|
|
|
/* BYTE. */
|
|
mmix_operands_byte,
|
|
|
|
/* WYDE. */
|
|
mmix_operands_wyde,
|
|
|
|
/* TETRA. */
|
|
mmix_operands_tetra,
|
|
|
|
/* OCTA. */
|
|
mmix_operands_octa,
|
|
|
|
/* LOCAL. */
|
|
mmix_operands_local,
|
|
|
|
/* BSPEC. */
|
|
mmix_operands_bspec,
|
|
|
|
/* ESPEC. */
|
|
mmix_operands_espec,
|
|
};
|
|
|
|
struct mmix_opcode
|
|
{
|
|
const char *name;
|
|
unsigned long match;
|
|
unsigned long lose;
|
|
enum mmix_operands_type operands;
|
|
|
|
/* This is used by the disassembly function. */
|
|
enum mmix_insn_type type;
|
|
};
|
|
|
|
/* Declare the actual tables. */
|
|
extern const struct mmix_opcode mmix_opcodes[];
|
|
|
|
/* This one is terminated with an entry with a NULL name. */
|
|
extern const struct mmix_spec_reg mmix_spec_regs[];
|
|
|
|
/* Some insn values we use when padding and synthesizing address loads. */
|
|
#define IMM_OFFSET_BIT 1
|
|
#define COND_INV_BIT 0x8
|
|
#define PRED_INV_BIT 0x10
|
|
|
|
#define PUSHGO_INSN_BYTE 0xbe
|
|
#define GO_INSN_BYTE 0x9e
|
|
#define SETL_INSN_BYTE 0xe3
|
|
#define INCML_INSN_BYTE 0xe6
|
|
#define INCMH_INSN_BYTE 0xe5
|
|
#define INCH_INSN_BYTE 0xe4
|
|
#define SWYM_INSN_BYTE 0xfd
|
|
#define JMP_INSN_BYTE 0xf0
|
|
|
|
/* We can have 256 - 32 (local registers) - 1 ($255 is not allocatable)
|
|
global registers. */
|
|
#define MAX_GREGS 223
|